Sentinel Integrity offers a wide array of advanced NDT applications for turnaround and on-stream inspection activities. Services include advanced ultrasonic testing, heat exchanger tubing inspections, eddy current array testing, real time radiography, and magnetic flux leakage tank bottom inspections.

Click any of the links below to learn more about our advanced NDT services.


Phased Array Ultrasonic Testing

Phased Array Ultrasonic Testing (PAUT) is an advanced NDT method that is often used for weld inspection and crack detection. It can also be used to effectively profile remaining wall thickness in corrosion survey applications. PAUT works...

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Time of Flight Diffraction

Time of Flight Diffraction (TOFD) is an advanced method of ultrasonic testing. This technique is a sensitive and accurate method for the nondestructive testing of welds or defects. TOFD is conducted from a system that is made up of two...

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Automated Ultrasonic Testing

Automated Ultrasonic Testing (AUT) is a fully automated technique that utilizes a multi-channel...

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Real-time Radiography

Real Time Radiography (RTR) is a type of non-destructive testing (NDT) that uses radiation such as x-rays or gamma rays to produce digital images of a piece of equipment for later examination. The RTR process begins by emitting radiation...

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Eddy Current Array

Eddy Current Array (ECA) is a form of nondestructive eddy current testing that involves electronically driving eddy current coils placed next to each other in a probe assembly. Each coil in the probe produces a signal, the strength of which...

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Tubing Inspection

Sentinel Integrity’s Tubing Inspection Service Line maintains a staff of fully qualified and highly trained tubing data analysis and acquisition technicians. They are capable of evaluating and inspecting your heat exchanger tubing...

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HF Flange Assessments

An HF flange, or HF alky flange, is the external lip of a Hydrofluoric (HF) Alkylation Unit, where pipes and other similar equipment can be connected. HF flanges are particularly vulnerable to hydrofluoric acid corrosion, which can be...

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HIC/SOHIC Assessments

Hydrogen induced cracking (HIC) and Stress-oriented hydrogen induced cracking (SOHIC) are both forms of wet hydrogen sulfide (H2S) cracking. When left untreated, both forms of corrosion can be very dangerous. Untreated HIC or...

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High Temperature Hydrogen Attack

High-Temperature Hydrogen Attack (HTHA) is a damage mechanism that affects equipment that has been exposed to hydrogen at certain temperatures and pressures. At these temperatures, the hydrogen molecules (H2) dissociate into individual...

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Magnetic Flux Leakage

Magnetic flux leakage (MFL) is a nondestructive testing technique that is uses electromagnetism to search for flaws or damage in ferromagnetic materials. Sentinel Integrity Solutions uses MFL to inspect the floors of tanks for flaws and...

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